Cybersecurity · Linux · Networks

Freelance Cybersecurity & Linux engineer for modern teams.

I help companies secure their Linux servers, networks, and automation pipelines using Linux, C/C++, Python, Bash and a security‑first mindset. Based in France, working with clients worldwide.

Linux hardening Network security C/C++ · Python · Bash Automation & tooling
Available for remote missions · France & worldwide
About

Who I am

I’m Alex, a junior cybersecurity engineer focused on Linux systems, networks, and secure tooling. I work with teams that need someone hands‑on, pragmatic, and able to communicate clearly with both technical and non‑technical people.

What I do

I help you secure and operate your infrastructure: from Linux server hardening to network diagnostics and automation. My goal is to make your systems safer, more reliable, and easier to maintain.

  • Linux administration (Debian, Ubuntu, server setup & hardening)
  • Network analysis (TCP/IP, routing, firewalling, VPN)
  • Secure scripting with Bash & Python
  • Systems tooling in C/C++ (performance & security focus)
  • Monitoring, logging, and incident triage
  • Clear documentation and knowledge transfer
I’m based in France and open to remote missions in Europe and worldwide.
A
Alex · Cybersecurity & Linux · Freelance

I enjoy digging into low‑level details (packets, syscalls, logs) and turning them into simple, actionable decisions for your team. If you need someone who can both script and explain, we’ll work well together.

Services

How I can help your team

I offer focused, technical missions around Linux, networks, and security. Ideal for startups, small businesses, and technical teams that need an extra pair of hands on critical tasks.

🛡

Linux hardening & security

Secure your Linux servers with best practices and clear documentation.

  • SSH configuration & key‑based access
  • Firewall setup (iptables, nftables, UFW)
  • Service minimization & permissions
  • Log review and basic incident triage
🖧

Network diagnostics & security

Understand what’s happening on your network and reduce your attack surface.

  • Traffic analysis & troubleshooting
  • Secure remote access (VPN, SSH tunnels)
  • Basic segmentation & access control
⚙️

Automation & scripting

Automate repetitive tasks and improve reliability with scripts and tools.

  • Bash scripts for sysadmin workflows
  • Python tooling for monitoring & parsing
  • Cron jobs, backups, deployment helpers
💻

Secure tooling in C/C++

Low‑level tools with a security mindset.

  • Network utilities & socket‑based tools
  • Performance‑oriented system helpers
  • Code review with security focus
Projects

Selected technical work

A few examples of the kind of tools and workflows I build. These can be adapted or extended for your own infrastructure.

Linux · Bash

Linux server hardening toolkit

A collection of Bash scripts to audit and harden Linux servers with repeatable steps and clear logs.

Focus: SSH, firewall, services, permissions
Bash Linux Security
Python · Networks

Network monitoring & anomaly detection

Python‑based scripts to inspect traffic, detect anomalies, and export data for dashboards.

Focus: Visibility, alerts, log export
Python Scapy Monitoring
C/C++ · Security

Secure socket helper library

Lightweight C/C++ helpers to simplify secure socket usage and reduce common mistakes in network code.

Focus: Secure defaults, maintainability
C/C++ Sockets Security
Feedback

What clients can expect

These are example quotes you can replace with real feedback from Upwork, Malt, or direct clients once you have them.

“Alex quickly secured our Linux server and automated our backups. Clear communication and detailed documentation.”
CTO · Small business in France
“Great technical skills and very pragmatic. Alex helped us understand our network issues and proposed simple, effective fixes.”
Founder · European startup
Contact

Let’s work together

I’m available for freelance missions on platforms like Upwork and Malt, as well as direct contracts. Tell me about your infrastructure, your constraints, and your goals.

Project details

For a fast and accurate response, include:

  • Context: type of infrastructure (servers, network, cloud, etc.)
  • Goals: what you want to secure or automate
  • Timeline: when you’d like to start
  • Platform: Upwork, Malt, or direct collaboration
Linux · Networks · Security
C/C++ · Python · Bash
Remote · France & worldwide
Use this page as your portfolio link and summary.

Contact information

You can adapt this block for your Upwork/Malt profile or personal website.

name: Alex
role: Cybersecurity & Linux freelance engineer
location: France (remote‑friendly)
platforms: Upwork, Malt, direct
focus: linux, networks, automation, secure tooling